<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 面包屑导航End -->

    <el-card>
      <div id="main" style="width: 800px; height: 600px"></div>
    </el-card>
  </div>
</template>

<script>
// const echarts =  require("echarts");
import * as echarts from "echarts";

export default {
  data() {
    return {
      // 报表数据
      options: {
        title: {
          text: "用户来源",
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3",
            },
          },
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            boundaryGap: false,
          },
        ],
        yAxis: [
          {
            type: "value",
          },
        ],
      },
    };
  },
  mounted() {
    console.log(echarts);
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById("main"));
    this.getChartData(myChart);
  },
  methods: {
    async getChartData(myChart) {
      let { data: res } = await this.$http.get("/reports/type/1");

      if (res.meta.status !== 200)
        return this.$message.error("获取报表数据失败！");
      this.$message.success("获取报表数据成功！");

      let options = Object.assign(this.options, res.data);

      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(options);
    },
  },
};
</script>